Just wondering if I did this right:(adsbygoogle = window.adsbygoogle || []).push({});

Here is the question: find [tex]\frac{\partial z}{\partial x} of \frac{x^2}{9} - \frac{y^2}{4} + \frac{z^2}{2} = 1[/tex]

Now I put the [tex] \frac{\partial z}{\partial x} [/tex] on both sides then got.

[tex] \frac{2x}{9} - 0 + z \frac{\partial z}{\partial x} = 0 [/tex]

So

[tex] \frac{\partial z}{\partial x} = -\frac{2x}{9z} [/tex]

Now I know this is the right answer I am just curious if I did it right, it has been a while.

Now my reasoning:

[tex] \frac{\partial z}{\partial x} \frac{x^2}{9} [/tex] is just the derivative with respect to x, so it will be [tex]\frac{2x}{9}[/tex]

[tex] \frac{\partial z}{\partial x} \frac{y^2}{4} [/tex] has no z or x, so it is constand and therefore 0.

[tex] \frac{\partial z}{\partial x} \frac{z^2}{2} [/tex] has a z, so it is the derivative of itself, but times [tex] \frac{\partial z}{\partial x} [/tex]

Is all of that correct, or did I do something wrong. The book I have only shows one example

Thanks!

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# Homework Help: Partial Implicit Differentiation

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